.form-group em{ display: none}
/*点击输入状态颜色变深*/
.OK input{ color: #494949; border-color: #b0afaf; background:#fff;}
.OK i.icon{ color: #494949;}

/*成功状态*/
.success input, .success textarea  { background: rgba(125,217,87,0.1); border-color: #8ec876; color: #8ec876; }
.success em{display: block;}
.success i,.success em b{ color: #8ec876}
.success .input-group em b{display: none;}
/*错误状态*/
.error input, .error textarea,.error .prompt { background: rgba(255,68,0,0.1); border-color: #e73b29; color: #a94442; }
.error em{display: block;}
.error i,.error em b{ color: #e73b29}
.error .input-group em b{display: block;}
/*警告状态*/
.warning input{ background: rgba(228,205,48,0.1); border-color: #e4cd30; color: #b39f18; }
.warning em{display: block;}
.warning i,.warning em b{ color: #e4cd30}
.warning .input-group em b{display: block;}